<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品分类</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <el-row>
        <el-col>
          <el-button type="primary" @click="showAddCateDialog">添加分类</el-button>
        </el-col>
      </el-row>
      <el-dialog
        title="添加分类"
        :visible.sync="addCateDialogVisible"
        width="50%"
        @close="addCateDialogClosed"
      >
        <el-form
          :model="addCateForm"
          :rules="addCateFormRules"
          ref="addCateFormRef"
          label-width="100px"
        >
          <el-form-item label="分类名称" prop="cat_name">
            <el-input v-model="addCateForm.cat_name"></el-input>
          </el-form-item>
          <el-form-item label="父级分类">
            <el-cascader
              v-model="selecktKeys"
              :options="parentCateList"
              :props="cascaderProps"
              @change="parentCateChange"
              clearable
            ></el-cascader>
          </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
          <el-button @click="addCateDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="addCate">确 定</el-button>
        </span>
      </el-dialog>
      <tree-table
        :data="cateList"
        :columns="colums"
        :selection-type="false"
        :expand-type="false"
        show-index
        index-text="#"
        border
        :show-row-hover="false"
        class="tree-table"
      >
        <template slot="isok" slot-scope="scope">
          <i
            class="el-icon-success"
            v-if="scope.row.cat_deleted === false"
            style="color:lightgreen;"
          ></i>
          <i class="el-icon-error" v-else style="color:red;"></i>
        </template>
        <template slot="order" slot-scope="scope">
          <el-tag v-if="scope.row.cat_level ==0">一级</el-tag>
          <el-tag type="success" v-else-if="scope.row.cat_level ==1">二级</el-tag>
          <el-tag type="warning" v-else-if="scope.row.cat_level ==2">三级</el-tag>
        </template>
        <template slot="edit" slot-scope="scope">
          <el-button type="primary" icon="el-icon-edit" @click="editCateDialog(scope.row.cat_id)">编辑</el-button>
          <el-button type="danger" icon="el-icon-delete" @click="deleteCateDialog(scope.row.cat_id)">删除</el-button>
        </template>
      </tree-table>
      <!--编辑弹框-->
      <el-dialog title="修改分类名称" :visible.sync="editDialogVisible" width="50%">
        <el-form
          :model="editCateForm"
          :rules="addCateFormRules"
          ref="editCateFormRef"
          label-width="100px"
        >
          <el-form-item label="分类名称" prop="cat_name">
            <el-input v-model="editCateForm.cat_name"></el-input>
          </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
          <el-button @click="editDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="editCate">确 定</el-button>
        </span>
      </el-dialog>
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      ></el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
  data () {
    return {
      queryInfo: {
        type: 3,
        pagenum: 1,
        pagesize: 5
      },
      cateList: [],
      total: 0,
      //   为table指定列的定义
      colums: [{
        label: '分类名称',
        prop: 'cat_name'
      }, {
        label: '是否有效',
        //   定义 模板并赋名
        type: 'template',
        template: 'isok'
      }, {
        label: '排序',
        //   定义 模板并赋名
        type: 'template',
        template: 'order'
      }, {
        label: '操作',
        //   定义 模板并赋名
        type: 'template',
        template: 'edit'
      }
      ],
      addCateDialogVisible: false,
      addCateFormRules: {
        cat_name: [
          { required: true, message: '请输入分类名称', trrigger: 'blur' }
        ]
      },
      addCateForm: {
        cat_name: '',
        cat_pid: 0,
        cat_level: 0
      },
      parentCateList: [],
      cascaderProps: {
        value: 'cat_id',
        label: 'cat_name',
        children: 'children',
        expandTrigger: 'hover',
        checkStrictly: true

      },
      selecktKeys: [],
      editDialogVisible: false,
      editCateForm: {
        cat_name: '',
        cat_pid: ''
      }
    }
  },
  created () {
    this.getCateList()
  },
  methods: {
    async getCateList () {
      const { data: res } = await this.$http.get('categories', { params: this.queryInfo })
      if (res.meta.status !== 200) return this.$message.error('获取商品分类数据失败')
      this.cateList = res.data.result
      this.total = res.data.total
    },
    handleSizeChange (newsize) {
      this.queryInfo.pagesize = newsize
      this.getCateList()
    },
    handleCurrentChange (newpage) {
      this.queryInfo.pagenum = newpage
      this.getCateList()
    },
    showAddCateDialog () {
      this.getParentCateList()
      this.addCateDialogVisible = true
    },
    async getParentCateList () {
      const { data: res } = await this.$http.get('categories', { params: { type: 2 } })
      if (res.meta.status !== 200) return this.$message.error('获取父级分类失败')
      this.parentCateList = res.data
    },
    parentCateChange () {
      if (this.selecktKeys.length > 0) {
        this.addCateForm.cat_pid = this.selecktKeys[this.selecktKeys.length - 1]
        this.addCateForm.cat_level = this.selecktKeys.length
      } else {
        this.addCateForm.cat_pid = 0
        this.addCateForm.cat_level = 0
      }
    },
    addCateDialogClosed () {
      this.$refs.addCateFormRef.resetFields()
      this.selecktKeys = []
      this.addCateForm.cat_pid = 0
      this.addCateForm.cat_level = 0
    },
    addCate () {
      this.$refs.addCateFormRef.validate(async vaild => {
        if (!vaild) return
        const { data: res } = await this.$http.post('categories', this.addCateForm)
        if (res.meta.status !== 201) {
          return this.$message.error('添加分类失败')
        }
        this.$message.success('添加分类成功')
        this.getCateList()
        this.addCateDialogVisible = false
      })
    },
    async editCateDialog (id) {
      this.editDialogVisible = true
      const { data: res } = await this.$http.get('categories/' + id)
      if (res.meta.status !== 200) return this.$message.error('获取商品分类失败')
      this.editCateForm = res.data
    },
    editCate () {
      this.$refs.editCateFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.put('categories/' + this.editCateForm.cat_id, { cat_name: this.editCateForm.cat_name, cat_id: this.editCateForm.cat_id })
        console.log(this.editCateForm)
        if (res.meta.status !== 200) {
          return this.$message.error('更新商品名称失败')
        }
        this.getCateList()
        this.editDialogVisible = false
      })
    },
    async deleteCateDialog (id) {
      const res = await this.$confirm('此操作将永久删除该分类, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // console.log(res)
      if (res !== 'confirm') return this.$message.info('已取消删除')
      const { data: red } = await this.$http.delete('categories/' + id)
      if (red.meta.status !== 200) return this.$message.error('删除分类失败')
      this.$message.info('删除分类成功')
      this.getCateList()
    }
  }
}
</script>
<style lang="less" scoped>
.tree-table{
    margin-top: 15px ;
}
.el-cascader{
    width: 100%;
}
</style>
